Building-block.



No. 812,667. I PATEN'IED FEB, 13, 1906. W. D. MOORE. BUILDING BLOCK.

APPLICATION FILED DE0.9|1904.

wawzoow NITED STATES PATENT OFFICE.

WILLIAM D. MOORE, OFORESTODLIOWA.

BUILDING-BLOCK.

in view, which will appear as the description roceeds, the invention resides in the novel fbrm of wall and building-block hereinafter described and claimed.

In the accom anying drawings, forming part of this speci cation, Figure 1 1s a perspec-- tive view of a wall constructed in accordance with the invention. Fi 2 is a detail view of one of the improved bui ding-blocks. Fig. 3 is a similar view of a block adapted for use in forming the corner of a'wall. Figs. 4 and 5 are detail views showing modified forms of the im roved block.

As 3 own in Fig. 2, the improved block A is substantially N-shaped. In other words, each block comprises two approximately parallel members connected with'each other by an obli ue member. Each of the notches 1 and 2, i)y which the N-shaped form of the block is produced, extends, preferably, beond the center of the block, said center bemg indicated by the line 3 3. The object in extending each of the notches 1 and 2 beyond the center of the block is to produce an air-chamber throughout the entire length of the block in order to render the same frostproof. .Undercut mortar-grooves, such as 4, are formed adjacent to the outer ends of the notches 1 and 2.

The block'B, (illustrated in Fi 3,) which is adapted to be used in forming t e corner of a building, is provided with a single notch 6, having mortar-grooves 7, the notch 6 and mortar-grooves 7 beingadapted to register with the notch and grooves in the ad'acent N- shaped block in order to form a iamondshaped air-chamber. The block B preferably is formed with a groove or channel 8, adapted to permit the introduction of heated air to the air-chamberfor use-in heating the building. I

. The lock C (illustrated in Fig. 4) prefer- Specification of Letters Patent. 4

Application filed December 9 1904. Serial No. 236,208.

ably comprises a plurality of N-shaped blocks Patented Feb..13, 1- 19,d6.

formed integral with each-other,asrshown;

In other words, the block 0 comprisestwo approximately parallel members connected with each other by two oblique members, as shown. a

A further modification is illustrated in Fig; 4 as consisting of an'elongated .N-shaped blockD. A

In constructing a wall accordin'g'to' the present invention the blocks A areplaced upon each other in such manner that the notches of one block re 'ster with the notches.

of the next adjacent looks. The joints of one tier of blocks are out of line with the joints of the next lower tier, as indicated in Fig. 1. It will be understood, however, that t ediamond-shaped air-chambers in one tier of locks overlap and are in communication with the chambers of the next lower tier in such manner as to produce a circulatiorfof heated air throughout the entire wall of the building, thus maintaining the same in warm condition. Grooves, such as 8 in Fig. 3, are formed in the blocks wherever necessary to permit the introduction of heated air from a suitable furnace and to enable such air to be withdrawn at suitable points through registers or other similar devices into a room which is to be heated.

The elongated N-shaped blocks D, such as illustrated in Fig. 5, are adapted to be placed beneath window-sills or over doorways, as will be apparent to those skilled in the art to which thls invention relates.

The improved building blocks may be formed of any suitable materialsuch, forexample, as artificial stone and the like.

It will be understood that the exterior of the wall may be roughened or ornamented in any suitable manner, as desired.

It will be understood that the mortargrooves of the adjacent blocks register ,together and are adapted to receive mortar or other suitable material for. forming air-tight seams. I

Changes in the precise embodiment of invention illustrated and described may be made within the sco e of the following claims without departing om the spirit of the invention or sacrificing any of its advantages.

It will be observe from Fi 2 of the drawings that the extremities o the N-shaped IIO words, the extremities of each block taper gradually or become decreased in width to-v ward the ends thereof. This method of forming the block increases its stren th and permits it to be withdrawn more easi y from the mold after the completion of the molding operation.

Instead of introducing heated air to the airchambers of a Wall constructed in accordance with this invention said air-chambers may be emplo ed for withdrawing cold air from a room an conducting the same to a furnace. After the cold air has been heated in the furnace it is conducted throu h a suitable pipe system to the rooms. In t 's Way a contlnuous circulation of air can be maintained through a building. Having thus described the invention, What is claimed is 1. A buildin -block comprising two approximate paraIlel members having mortargrooves formed on the inside of the end por- .tions thereof, and an oblique member con;-

WILLIAM D. MOORE.

my signature Witnesses; John W. MONEES, JOHN W. MoUoK. 

